The KATSU Tools Self-Centering Doweling Jig Kit (105409) is a high-precision woodworking drill guide designed for accurate hole positioning, dowel joining, and cabinet making. Built with an automatic self-centering mechanism, this jig automatically aligns to the center of timber boards without requiring manual measuring or marking, ensuring perfectly aligned joint holes every time.
Constructed from heavy-duty aluminum alloy with clear British imperial graduation markings, it features an adjustable clamping system capable of accommodating wood board thicknesses from 10mm up to 55mm (max 60mm). The kit comes complete with 6 hardened steel drill bushings in common imperial sizes (1/4", 5/16", and 3/8"), making it an essential positioning tool for furniture assembly, cabinet making, and DIY woodworking projects.
Self-Centering Precision Design: Automatically centers itself on square, round, or irregular timber stock for flawless dowel joint drilling without manual marking.
Wide Clamping Capacity (10mm – 55mm/60mm): Adjustable clamping mechanism easily handles thin boards as well as thick timber up to 55mm (max 60mm).
Clear Imperial Graduation Markings: Built-in British/Imperial scale allows quick, accurate measurements and exact positioning during drilling setup.
Durable Aluminum & Steel Construction: Sturdy aluminum alloy body paired with premium hardened steel bushings ensures wear resistance and long-lasting alignment accuracy.
6 Hardened Steel Bushings Included: Comes supplied with 6 drill bushings (2 × 1/4", 2 × 5/16", and 2 × 3/8") for versatile doweling applications.
| Specification Parameter | Performance Value |
| Brand | KATSU Tools |
| SKU | 105409 |
| Product Type | Self-Centering Doweling Jig & Woodworking Drill Guide |
| Main Material | Aluminum Alloy Body with Hardened Steel Bushings |
| Measurement System | British / Imperial Graduation Markings |
| Clamping Thickness Capacity | 10 mm – 55 mm (Max up to 60 mm) |
| Bushings Included (Imperial Sizes) | 1/4", 5/16", 3/8" (2 Pieces of Each Size) |
| Applicable Stock Shapes | Square, Round, or Irregular Timber |
| Operation Type | Manual Clamp / Self-Centering Mechanism |
1 × Self-Centering Doweling Jig Main Unit
2 × 1/4" Steel Drill Bushings
2 × 5/16" Steel Drill Bushings
2 × 3/8" Steel Drill Bushings
Furniture Assembly & Cabinet Making: Drilling precise dowel holes for flat-pack furniture, cabinets, shelves, and panel joints.
Precision Woodworking Joints: Crafting strong edge-to-edge, edge-to-corner, and T-joints in square or round timber.
DIY & Workshop Projects: Ideal for beginners and professional carpenters requiring fast, repeatable drilling accuracy.
Secure Board Clamping: Position the jig onto your timber and turn the clamping screw until both sides grip the board firmly to engage automatic centering.
Bushing Installation: Thread the required size steel bushings into the guide holes securely before inserting drill bits.
Maintain Clean Threads: Keep the lead screw and bushing threads free of sawdust for smooth clamping operation and accurate alignment.